Underwater cutting torch



Jan; 26, 1932. f LINE, 1 1,842,454

UNDERWATER CUTTING TORCH Filed Jan. 10, 1929 $31K I 9 M John LL-m1;

INVENTOR A ATTORNEY Patented Jan. 26, 1932 UNITED STATES,

JOHN LIND, or eaooxLYNfNEw YORK UNDERWATER CUTTING TORCH Application filed January 10, 1929. Serial No. 331,575.

(enanran'unnnn TEE A: or imncn 35. 1883, as mnnpnn APRIL so, 1928; 370 o. e. 757

My invention relates broadly to cutting torches and more particularly to an attachment therefore for maintaining a flame vide a torch of the character described in which the flame emitting therefrom is insulated from surrounding water. i Q With the above and other objects in view the invention consists in the construction, combination and' arrangement of parts as will be described more fully hereinafter.

Reference is to be had to the accompanying drawing forming a part of tln's specification wherein is illustrated a longitudinal view of a torch head, partially in section.

Referring more particularly to the draw-' ing, lindicates a mixing'chamberto which are admitted suitable jets of the gases used in the operation'of the torch, as, for example, e'xygen and hydrogen. If oxygen and hydrogen are i1sed,-the oxygen is admitted through the connections 2 and the hydrogen through the connection 3.- These connections 2 and 3 lead to the sources of supply of the 0 oxygen and hydrogen respectively. From thischamber the mixture passes through and issues from the tip 4, after being ignited, as

a flame adapted to cut metal, asis well known 1 'intheart. H 3" The mixing chamber, as shown in the drawing, is formed integralwith the tip 4, but, if desired, it may be made as a separate part suitably attached -to the tip. In either case, n

the tip andmixing chamber'combine as one unitary structurethat provides a means for commingling the gases in the tip unit. As

'shown themixing chamber provides an enlarged head for the tip, assists in maintaining the tip in the-torch headi When it is desired, however, to utlllze the torch under water, it is necessary to provide a means for insulating the flame from the surrounding water so that it will not be extinguished, but willburn constantly until extinguished by the operator. This I accomplish by means of a jet of air under pressure which completely encircles the flame, as will now be explained A sleeve or jacket 5, surrounding the tip and spaced therefrom, is brought into airtight contact with the torch head housing of the ,thus preventing the extinguishmentof the flame; I

It will be understood that the above description and accompanying drawing com- 7 prehend only the general and preferred embodiment of my invention and that Various minor chan es in details of construction, proportion an arrangementof parts may be made within the scope of the appended claims .and without sacrificing any of the advantages ofmy invention.

The invention descrlbcd herein may be manufactured and used byor for the Government for governmental purposes without the payment-to me of any royalty thereon.

What I claimjs:

1.1 A cutting torch head including a body portion, a tip provided with an enlarged head forminga mixing chamber, inlets to said chamber,a sleeve spaced from the tip providing a chamber therebetween, an inlet to the intervening chamber for air under pressure, and means for assembling the tip and sleeve to the head.

2. .A cutting torch head including a body portion, a combined tip and mixing chamber, inlets to said chamber, a sleeve spaced from the tip providing a chamber therebev tween, an inlet to the intervening chamber for an under pressure, and means for assembling the ti and sleeve to the head.

3. cutting torch head including a body portion, a tip, a chamber for commingling gases ,in the tip structure, means for conducting the gases to said chamber, a sleeve spaced from the tip providing a chamber ther'ebetween, an inlet to the intervening chamber for air under pressure, and means for assembling the tip and sleeve to the head.

- JOHN LIND. 

